Yes, you already can. There are two ways to go about this. The simplest way is this: Go into your Settings and look for the "Helmet Off in Non-Combat Zones" setting. Disable it. Now your helmet will be on 24/7 and you can claim to be whatever gender you want. The harder way is this: Step 1- move everything your character has into the vault, replace it with garbage blues. Step 2- delete your character. Step 3- make a new character with the gender you want them to be. Step 4- collect everything from the vault. There ya go. You have successfully changed your characters gender. And before you say "but then i have to do all the stories over again!!" Well, everyone on here claims there's never anything to do so hey, the stories MUST be easy to get done in a few hours, and this will give you something to do!